Some municipalities are promoting lead-filtering point-of-use (POU) systems to minimize the risk of lead exposure through drinking water, often targeting use at racial minorities and low-income households. However, links among social inequality markers and adoption of these systems are not well understood. Survey data on adoption and use of POU systems were collected from a U.S. Mechanical Turk (MTurk) sample (N = 2,867) in March 2018. We use logistic regression to assess the association of race/ethnicity, socioeconomic status (SES), and lead-filtering POU adoption. We also examined key health behaviors related to POU systems. We found that race and SES are indirectly predictive of lead-filtering POU adoption through the propensity of some respondents to report a residence with a lead service line and levels of concern and knowledge about lead exposure. In addition, individuals with similar levels of concern about lead in water have lower odds of adopting a POU system if they have lower, rather than higher, incomes. Among POU adopters, while confidence in correct use of these devices was relatively high, the frequency of filtered water use for cooking was lower than drinking frequency. Overall, these findings inform health policies aimed at mitigating risk of lead exposure through water.

一些市政当局正在推广铅过滤使用点（POU）系统，以最大程度地减少通过饮用水接触铅的风险，通常将其用于少数民族和低收入家庭。但是，人们对社会不平等标记与采用这些系统之间的联系还不太了解。上采纳和使用POU系统的调查数据来自美国机械特克（MTurk）样品收集（Ñ（= 2,867）。我们使用逻辑回归评估种族/民族，社会经济地位（SES）和采用铅过滤POU的关联。我们还检查了与POU系统相关的关键健康行为。我们发现，种族和SES通过一些受访者倾向于报告具有铅服务线的住所以及对铅暴露的关注程度和知识水平，间接地预测采用铅过滤POU。此外，对水中铅的关注程度相似的个人，如果他们的收入较低而不是较高，那么采用POU系统的可能性较低。在使用POU的使用者中，尽管对正确使用这些装置的信心较高，但用于烹饪的过滤水的使用频率低于饮用频率。总体，